build-review-loop

build-review-loop is a skill for Claude Code, Codex from moonlight-lupin/agent-skills. It costs 63 tokens per session (15,065 once invoked), scanned A, original, MIT.

An automated workflow for repeating a build, review, fix, and re-review cycle with separate coding and reviewing models. It uses Cursor CLI for implementation and another model for review.

In plain words
What is it for?
Use it for iterative feature work or fixes that need several rounds of implementation and code review.
Why use it?
It prevents a single model from both making and approving the same changes, while keeping review rounds structured and independently checked.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions .claude-plugin; mentions Claude Code; runs codex exec.

Good fit Use it for iterative feature work or fixes that need several rounds of implementation and code review.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/moonlight-lupin/agent-skills/build-review-loop
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add moonlight-lupin/agent-skills --skill build-review-loop
Clone the repo
git clone --depth 1 https://github.com/moonlight-lupin/agent-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for build-review-loop

README.md
[![agentmods](https://agentmods.dev/badge/skills/moonlight-lupin/agent-skills/build-review-loop/github.svg)](https://agentmods.dev/skills/moonlight-lupin/agent-skills/build-review-loop)
Your own site
<a href="https://agentmods.dev/skills/moonlight-lupin/agent-skills/build-review-loop"><img src="https://agentmods.dev/badge/skills/moonlight-lupin/agent-skills/build-review-loop/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for build-review-loop

Your own site · 80×15
<a href="https://agentmods.dev/skills/moonlight-lupin/agent-skills/build-review-loop"><img src="https://agentmods.dev/badge/skills/moonlight-lupin/agent-skills/build-review-loop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 15,065 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00063 $0.15065
Opus 5.5 $0.00025 $0.06026
Sonnet 5.5 $0.00013 $0.03013
Haiku 4.5 $0.00006 $0.01507

Measured today against content hash 24121c325296, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

build-review-loop scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/attest_file.py, scripts/capture_dispatch_result.py, scripts/loop_plan_check.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

software-development/build-review-loop/SKILL.md · 776 lines

How it starts

The opening of the file, as written. The whole thing — 776 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Build-Review Loop

Orchestrate N rounds of build → review → fix → re-review using different models for building vs reviewing (cross-model diversity). The orchestrator (Hermes) manages the loop, verifies independently, and delivers structured reviews.

MANDATORY: delegate the build — never hand-code mid-loop

User correction: "didnt see you using cursor cli". The orchestrator started hand-writing fixes in the repo instead of dispatching Cursor. That violates this skill's core contract even when the fix is small. Non-trivial dev work means: orchestrator writes a spec file, Cursor (user's default: cursor-grok-4.6-high, --force) implements, orchestrator verifies independently, Codex/Claude/Cursor review, iterate. Hand-editing is only acceptable for trivial mechanical fixes (a typo, a one-line version bump) — and even then, say so explicitly when deviating. If unsure whether it counts as non-trivial, delegate.

See also references/generated-frontmatter-and-reviewer-outages.md — reviewer-lane outage substitution pattern + the f-string YAML frontmatter double-failure class (:/# scalars break YAML; safe_dump default width wraps it) + the untracked-files reviewer trap. See also references/persistent-loop-plan.md — multi-session or multi-batch loops: loop state lives in loop-*.md files, not memory; resume with scripts/loop_plan_check.py, attest briefs with scripts/attest_file.py. Ported from planning-with-files; the native plugin was NOT installed (see references/planning-with-files-adaptation.md). See also references/evidence-pairs.md — every delivered batch carries a before/after evidence pair (screenshot, measured number, or output pair), embedded in the PR body or delivery message. Ported from michaelshimeles/skills. See also references/mobile-app-verification.md — APK/dex/baked-config artifact verification gates, version stamping, the 4-layer Android WebView network stack (cleartext / mixed-content / ws scheme / CORS), backgrounded-JavaScript login-death bugs, multi-round review convergence on lifecycle code. See also references/sync-pipeline-review-patterns.md — reviewing app ↔ external-source-of-truth sync code (Google Sheets, SaaS mirrors): fetch-inside-lock, status-clear scoping to processed snapshots, append reconcile/marker placement under dynamic column maps, blank-cell semantics, static-path auth whitelists. See also references/review-findings-adjudication.md — adjudicating reviewer BLOCKINGs against the dispatch spec (dismiss with cause, never silently), the four recurring test-quality findings (hook-bypass, loose string-greps, single-open DOM tests, over-broad state selectors) and their fixes, and fix-round routing back to the builder. See also references/production-reachability-review.md — the dead-feature cluster: public functions with tests but zero production callers (unreachable user stories while the suite stays green), test-only enrichment kwargs the runtime never passes, and the per-batch grep pass that catches it. See also references/extraction-from-filled-docs.md — fill-template extraction domain depth: fingerprint/structural context, collapse ordering + XML validity + unclaimed-content preservation, path-escape and hardlink guards, and the reviewer traps for extraction code.

Read the full file on GitHub · 776 lines

Files

What ships with it

41 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today First seen · 776 lines · 63 tokens per session scan A 24121c325296

Subscribe to this mod's changes

build-review-loop is a skill published in the GitHub repository moonlight-lupin/agent-skills (101 stars, last pushed today), licensed MIT. It adds 63 tokens to every session and 15,065 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-17.

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